CN111067726A

CN111067726A - Multifunctional electric wheelchair

Info

Publication number: CN111067726A
Application number: CN202010004529.6A
Authority: CN
Inventors: 张建兰
Original assignee: Fuyoukang Intelligent Medical Technology Kunshan Co Ltd
Current assignee: Fuyoukang Intelligent Medical Technology Kunshan Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-04-28

Abstract

The invention discloses a multifunctional electric wheelchair, which comprises a vehicle body, a cushion assembly, a pressure reducing device, a backrest support driving device and a leg supporting device, wherein the cushion assembly is arranged on the vehicle body; the cushion assembly is mounted on the pressure relief device; the pressure reducing device is arranged on the vehicle body and used for driving the cushion assembly to move to a pressure reducing position with high front and low back relative to the vehicle body; the backrest is arranged on the backrest support driving device; the backrest support driving device is connected to the cushion assembly and is used for driving the backrest to rotate relative to the cushion assembly; the leg supporting device is connected to the cushion assembly and used for supporting the legs of the patient, and the leg supporting device is used for driving the legs of the patient to be lifted upwards. The invention can enable the cushion to lean backwards so as to reduce the pressure of the buttocks of the patient, enable the patient to lie flat and raise the legs of the patient, further relieve the muscular soreness of the patient and improve the comfort level of the wheelchair.

Description

Multifunctional electric wheelchair

Technical Field

The invention relates to a multifunctional electric wheelchair.

Background

At present, the wheelchair is an important medical rehabilitation tool and is widely applied to the auxiliary medical industry, most of the existing wheelchairs are simple in structure and single in function, and a patient can only sit on the wheelchair for a long time, so that the hip of the patient is excessively pressed and is sore. In addition, the existing wheelchair can not enable the patient to lean backwards to decompress the buttocks of the patient, the patient can not lie on the wheelchair, the legs of the patient can not be too high, the patient can only lean on the wheelchair to keep a posture for a long time, and further the phenomenon of muscle soreness can occur, so that the wheelchair is very uncomfortable to use. In addition, the headrest can not be adjusted in the current wheelchair, can't adapt to the patient of different heights, and wheelchair controller rigidity makes the patient operate inconveniently, and the wheelchair back can't be folded moreover, is not convenient for store and carry, brings a great deal of inconvenience for the user.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a multifunctional electric wheelchair, which can enable a cushion to lean backwards so as to reduce the pressure of the buttocks of a patient, enable the patient to lie flat and raise the legs of the patient, further relieve the muscular soreness of the patient, improve the use comfort of the wheelchair, adjust the position of a headrest, expand applicable people, fold a backrest and improve the convenience of storage and carrying.

In order to solve the technical problems, the technical scheme of the invention is as follows: a multifunctional electric wheelchair comprises a vehicle body, a cushion assembly, a pressure reducing device, a backrest support driving device and a leg supporting device; wherein the content of the first and second substances,

the cushion assembly is mounted on the pressure relief device and has a horizontal initial position;

the pressure reducing device is arranged on the vehicle body and used for acting to drive the cushion assembly to move to a pressure reducing position with high front and low back relative to the vehicle body;

the backrest is arranged on the backrest support driving device;

the backrest support driving device is connected to the cushion assembly and used for acting to drive the backrest to rotate relative to the cushion assembly, so that the backrest has a lying position enabling a patient to lie on the cushion assembly and the backrest and a leaning position enabling the patient to lean on the cushion assembly and the backrest in the rotating process;

the leg supporting device is connected to the cushion assembly and is used for supporting the legs of the patient, and the leg supporting device is used for acting to drive the legs of the patient to be lifted upwards.

Further provides a specific scheme of the pressure reducing device, wherein the pressure reducing device comprises a base, a driving mechanism and at least one rocker arm driving rod; wherein the content of the first and second substances,

the base is arranged on the vehicle body;

the rear end part of the cushion component is connected to the base in a sliding mode along the horizontal direction;

one end of the rocker arm driving rod is hinged to the cushion assembly, and the other end of the rocker arm driving rod is hinged to the base;

the driving mechanism is installed on the base and connected with the rocker arm driving rod, and the driving mechanism is used for acting to drive the rocker arm driving rod to rotate relative to the base, so that the rear end part of the cushion assembly is driven to slide on the base and the front end part of the cushion assembly is driven to ascend or descend.

Further provides a specific scheme of the driving mechanism, wherein the driving mechanism comprises a driving shaft, a driving connecting rod, a pressure reduction linear driving part, transmission rods in one-to-one correspondence with the rocker arm driving rods and driven connecting rods in one-to-one correspondence with the transmission rods; wherein the content of the first and second substances,

the driving shaft is rotatably connected to the base;

one end part of the driving connecting rod is connected with the driving shaft;

one end of the decompression linear driving component is hinged on the base, and the other end of the decompression linear driving component is hinged on the other end of the driving connecting rod, so that the decompression linear driving component drives the driving shaft to rotate through the driving connecting rod;

one end of the driven connecting rod is connected to the driving shaft, and the other end of the driven connecting rod is hinged to one end of the corresponding transmission rod;

the other end of the transmission rod is hinged to the corresponding rocker arm driving rod, so that the driving shaft drives the driven connecting rod to rotate, and the rocker arm driving rod is driven by the transmission rod to rotate relative to the base.

Further, the rear end part of the cushion component is connected to the base in a sliding manner along the horizontal direction through at least one sliding mechanism, and the sliding mechanism comprises a sliding plate, at least two sliding wheels and a sliding groove arranged on the base; wherein the content of the first and second substances,

the length direction of the sliding groove is arranged along the horizontal direction;

the rear end part of the cushion component is hinged on the sliding plate;

the sliding wheel is rotatably connected to the sliding plate and is slidably fitted in the sliding groove.

The cushion component comprises an installation seat and a cushion connected to the installation seat, wherein the installation seat comprises a front cross rod, a rear cross rod, two installation rods and connecting plates in one-to-one correspondence with the installation rods; wherein the content of the first and second substances,

the connecting plates are connected to the rear end parts of the corresponding mounting rods;

one end of the rear cross bar is connected to one connecting plate, and the other end of the rear cross bar is connected to the other connecting plate;

one end of the front cross bar is connected with the front end of one of the mounting rods, and the other end of the front cross bar is connected with the front end of the other mounting rod;

the rocker arm driving rods and the sliding mechanisms are respectively provided with two rocker arm driving rods, the rocker arm driving rods and the sliding mechanisms are respectively in one-to-one correspondence with the mounting rods, one end parts of the rocker arm driving rods are hinged to the corresponding mounting rods, and the rear end parts of the mounting rods are hinged to sliding plates in the corresponding sliding mechanisms.

Further, there is provided a specific aspect of the backrest support driving device, including:

a mounting bracket for mounting the backrest, one end of the mounting bracket being rotatably connected to the cushion assembly;

a backrest linear drive member, an upper end of said backrest linear drive member being hinged to said mounting bracket and a lower end of said backrest linear drive member being detachably hinged to said cushion assembly, such that when said lower end of said backrest linear drive member is hinged to said cushion assembly, said backrest linear drive member acts to drive said mounting bracket to rotate on said cushion assembly; when the lower end of the backrest linear driving part is separated from the cushion assembly, the mounting frame is used for rotating to be folded on the cushion assembly.

Further in order to facilitate folding the backrest, the lower end part of the backrest linear driving part is hinged on the cushion component through a quick release mechanism, and the quick release mechanism comprises:

a connecting pin connected to the lower end of the backrest linear driving part;

the quick-release seat is connected to the cushion component and is provided with a connecting groove for clamping the connecting pin;

the buckle is provided with a clamping hook part, the buckle is rotatably connected to the quick-release seat and is provided with a clamping position and a disengaging position in the rotating process, and when the buckle is positioned at the clamping position, the clamping hook part clamps the connecting pin in the connecting groove so that the connecting pin cannot be separated from the connecting groove from the notch of the connecting groove; when the buckle is positioned at the disengagement position, the hook part is disengaged from the connecting pin in the connecting groove;

connect the quick detach seat with the torsional spring between the buckle, a tip of torsional spring with the buckle offsets, another tip of torsional spring with the quick detach seat offsets, so that make under the spring action of torsional spring the buckle keeps at the joint position.

Further to support the head of the patient, the multi-function electric wheelchair further comprises a headrest device connected to the backrest support driving means, the headrest device comprising:

a headrest;

the first adjusting rod is provided with a first ball head;

the second adjusting rod is provided with a second ball head;

the sliding seat is connected to the backrest support driving device;

the fixed end part of the locking plate is connected to the sliding seat, a locking gap is formed between the movable end part of the locking plate and the sliding seat, and a sliding matching hole for slidably connecting the first adjusting rod is formed between the locking plate and the sliding seat;

the first locking bolt is connected between the movable end part of the locking plate and the sliding seat, and is used for pressing the movable end part of the locking plate to the sliding seat so as to enable the locking plate and the sliding seat to clamp the first adjusting rod;

the left clamping block and the right clamping block are matched to form a sliding channel for slidably connecting the second adjusting rod and a ball head cavity matched with the first ball head, and the first ball head is matched and connected in the ball head cavity;

the second locking bolt is connected between the left clamping block and the right clamping block and used for locking and connecting the left clamping block to the right clamping block when the second adjusting frame slides to a proper position in the sliding channel and the first ball head rotates to a proper position in the ball head cavity, so that the second adjusting frame and the first ball head are clamped by the left clamping block and the right clamping block;

the headrest is connected to the front clamping plate, and a front spherical surface part matched with the front end part of the second ball head is arranged on the front clamping plate;

the rear clamping plate is provided with a rear spherical part matched with the rear end part of the second ball head, and the second ball head is connected between the front spherical part and the rear spherical part in a matched manner;

at least one third locking bolt, third locking bolt connect the front plate with between the back splint, third locking bolt is used for when the headrest is relative when the second alignment jig rotates to suitable position, will back splint locking connection be in on the front plate, so that preceding sphere portion with back sphere portion presss from both sides tightly the second bulb.

Further provided is a concrete structure of the leg support device, which comprises two leg support mechanisms, wherein the leg support mechanisms comprise a connecting frame, a support rod, a pedal plate, a leg rest and a leg linear driving part; wherein the content of the first and second substances,

the connecting frame is connected to the cushion component;

one end part of the supporting rod is hinged on the connecting frame;

the pedal is connected to the other end of the supporting rod;

the leg rest is connected to the middle part of the supporting rod and is used for supporting the rear side of the shank;

one end of the leg linear driving part is hinged on the connecting frame, and the other end of the leg linear driving part is hinged on the supporting rod, so that the leg linear driving part drives the supporting rod to rotate to lift the leg of the patient.

Further in order to conveniently control the multifunctional electric wheelchair, the multifunctional electric wheelchair further comprises a left handrail, a right handrail, a controller and a corner device; wherein the content of the first and second substances,

the left armrest and the right armrest are both connected to the cushion component;

the controller is connected to the left handrail or the right handrail through the corner device, and the corner mechanism comprises a fixed seat, a left connecting rod, a right connecting rod, a left magnet, a right magnet and a movable seat; wherein the content of the first and second substances,

the fixed seat is connected to the left handrail or the right handrail;

one end of the left connecting rod is hinged to the fixed seat, and the other end of the left connecting rod is hinged to the movable seat;

one end of the right connecting rod is hinged to the fixed seat, the other end of the right connecting rod is hinged to the movable seat, the left connecting rod is parallel to the right connecting rod, and the left connecting rod and the right connecting rod are equal in length;

the controller is connected to the movable seat, the movable seat is movably connected to the fixed seat through the swinging of the left connecting rod and the right connecting rod, the movable seat is provided with a first position located in front of the patient and a second position separated from the front of the patient in the moving process, and when the movable seat moves to the first position or the second position, the right side part of the left connecting rod is abutted against the left side part of the right connecting rod;

the left magnet is connected to the left connecting rod, and the right magnet is connected to the right connecting rod, so that the left magnet and the right magnet attract the left connecting rod and the right connecting rod together.

After the technical scheme is adopted, the pressure reducing device can drive the cushion component to move to the pressure reducing position with high front and low back, and at the moment, the patient sits on the wheelchair on his back to reduce the pressure of the buttocks of the patient, so that the ache of the buttocks is relieved. The leg supporting device can drive the legs of the patient to be lifted upwards, the backrest supporting and driving device can drive the backrest to rotate to a lying position relative to the cushion assembly, and at the moment, the patient can lie on the cushion assembly and the backrest in a lying mode. When the cushion subassembly is located the decompression position of high back low before, simultaneously when the back is located the position of lying, can make the patient be in the state that the head is low high on the legs, can alleviate because of the fatigue that the seat of a specified duration arouses, through the switching of a plurality of gestures, make the patient needn't keep the position of sitting for a long time, and then can alleviate patient's muscle ache, improved the comfort level that the wheelchair used.

When the lower end of the backrest linear driving part is separated from the cushion assembly, the mounting frame can be folded on the cushion assembly, so that the space is saved, and the backrest linear driving part is convenient to carry and store.

The controller passes through the corner device is connected on the right side handrail, the controller can pass through the corner device removes to the patient in front of to make things convenient for patient's operation, the controller can also pass through the corner device removes to leaving before the patient, makes things convenient for the patient to pass in and out the wheelchair this moment, makes things convenient for the patient to have a dinner and reads the data.

Through not hard up first locking bolt, second locking bolt and third locking bolt, then adjust first regulation pole is relative the high position of mounting bracket adjusts the second regulation pole is relative the position and the angle of first regulation pole, adjusts the headrest is relative the angle of second regulation pole, so that the headrest moves to the optimum position to it is more comfortable that the messenger patient uses.

Drawings

FIG. 1 is a schematic structural view of a multi-functional electric wheelchair according to the present invention;

FIG. 2 is a schematic view of the multifunctional electric wheelchair of the present invention in a decompressed state;

FIG. 3 is a schematic structural view of the multifunctional electric wheelchair of the present invention in a lying state;

FIG. 4 is a schematic view of the pressure relief device with the cushion assembly in the pressure relief position;

FIG. 5 is a schematic view of the pressure relief device with the seat cushion assembly in the initial horizontal position;

figure 6 is a side view of the seat cushion assembly and pressure relief device of the present invention;

FIG. 7 is a schematic view of the backrest support driving unit of the present invention;

FIG. 8 is a schematic view of the backrest support driving unit of the present invention when folded;

FIG. 9 is a schematic structural diagram of a quick release mechanism of the present invention;

FIG. 10 is an exploded view of the assembly of the quick release mechanism of the present invention;

fig. 11 is an exploded view of the assembly of the headrest apparatus of the invention;

fig. 12 is a side view of the headrest apparatus of the invention;

fig. 13 is a schematic structural view of the controller and the angle turning device when the movable seat is located at the second position;

fig. 14 is an exploded view of the assembly of the corner device of the present invention;

fig. 15 is a top view of the corner device with the movable seat in the first position.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1 to 3, a multifunctional electric wheelchair includes a body 100, a cushion assembly 200, a pressure reducing device, a backrest 300, a backrest support driving device, and a leg support device 400; wherein the content of the first and second substances,

the cushion assembly 200 is mounted on the pressure relief device and has a horizontal initial position;

the decompression device is mounted on the vehicle body 100 and is used for driving the cushion assembly 200 to move to a decompression position with high front and low back relative to the vehicle body 100;

the backrest 300 is mounted on the backrest support driving means;

the backrest support driving device is connected to the seat cushion assembly 200, and is used for acting to drive the backrest 300 to rotate relative to the seat cushion assembly 200, so that the backrest 300 has a lying position for the patient to lie on the seat cushion assembly 200 and the backrest 300 and a leaning position for the patient to lean on the seat cushion assembly 200 and the backrest 300 in the rotating process;

the leg support 400 is coupled to the cushion assembly 200 and is configured to support the legs of the patient, and the leg support 400 is configured to actuate to lift the legs of the patient upward. Specifically, the pressure reducing device drives the cushion assembly 200 to move to a pressure reducing position with a high front part and a low back part, and at the moment, the patient sits on the wheelchair in an supine position, so that the pressure of the buttocks of the patient is reduced, and the ache of the buttocks is relieved; the leg supporting device 400 drives the legs of the patient to be lifted upwards, the backrest supporting driving device drives the backrest 300 to rotate relative to the seat cushion assembly 200 to a lying position, and the patient can lie on the seat cushion assembly 200 and the backrest 300 horizontally; when cushion subassembly 200 is located the decompression position of high back low before, simultaneously when back 300 is located the position of lying, can make the patient be in the low high state of leg of head, can alleviate because of the fatigue that causes of sitting for a long time, through the switching of a plurality of gestures, make the patient needn't keep the position of sitting for a long time, and then can alleviate patient's muscle ache, improved the comfort level that the wheelchair used.

As shown in fig. 1 to 6, the pressure reducing device is, for example, but not limited to, a structure including a base 1, a driving mechanism, and at least one rocker arm driving lever 2; wherein the content of the first and second substances,

the base 1 is mounted on the vehicle body 100;

the rear end part of the cushion assembly 200 is connected to the base 1 in a sliding manner along the horizontal direction;

one end of the rocker arm driving rod 2 is hinged on the cushion assembly 200, and the other end of the rocker arm driving rod 2 is hinged on the base 1;

the driving mechanism is installed on the base 1 and connected with the rocker arm driving rod 2, and the driving mechanism is used for acting to drive the rocker arm driving rod 2 to rotate relative to the base 1, so as to drive the rear end part of the cushion assembly 200 to slide on the base 1 and drive the front end part of the cushion assembly 200 to ascend or descend. Specifically, the rear end of cushion subassembly 200 is in along horizontal direction sliding connection make on the base 1 the height of the rear end of cushion subassembly 200 is unchangeable all the time, when the preceding tip of cushion subassembly 200 rises to the time of targetting in place, cushion subassembly 200 is in the low decompression position in high back in the front, when the preceding tip of cushion subassembly 200 descends to the time of targetting in place, cushion subassembly 200 is in horizontal initial position, cushion subassembly 200 is located the pressure that the decompression position can reduce patient's buttock and receive realizes the buttock decompression.

As shown in fig. 1 to 6, the driving mechanism includes, for example and without limitation, a driving shaft 3, a driving link 4, a pressure-reducing linear driving part 5, driving levers 6 corresponding to the rocker arm driving levers 2 one by one, and driven links 7 corresponding to the driving levers 6 one by one; wherein the content of the first and second substances,

the driving shaft 3 is rotatably connected to the base 1;

one end of the driving connecting rod 4 is connected with the driving shaft 3;

one end of the decompression linear driving component 5 is hinged on the base 1, and the other end of the decompression linear driving component 5 is hinged on the other end of the driving link 4, so that the decompression linear driving component 5 drives the driving shaft 3 to rotate through the driving link 4;

one end of the driven connecting rod 7 is connected to the driving shaft 3, and the other end of the driven connecting rod 7 is hinged to one end of the corresponding driving rod 6;

the other end of the transmission rod 6 is hinged to the corresponding rocker arm driving rod 2, so that the driving shaft 3 drives the driven connecting rod 7 to rotate, and then the transmission rod 6 drives the rocker arm driving rod 2 to rotate relative to the base 1, and further drives the cushion assembly 200 to move. Specifically, one end of the rocker arm driving rod 2 is hinged to the middle part of the seat cushion assembly 200, the driving rod 6 is hinged to the middle part of the rocker arm driving rod 2, the pressure reduction linear driving component 5 may be an electric push rod or an air cylinder, and in this embodiment, the pressure reduction linear driving component 5 is an electric push rod.

As shown in fig. 3 to 6, the rear end of the seat cushion assembly 200 is slidably connected to the base 1 in the horizontal direction by at least one sliding mechanism, such as, but not limited to, a structure including a sliding plate 8, at least two sliding wheels 9, and a sliding groove 10 provided on the base 1; wherein the content of the first and second substances,

the length direction of the sliding groove 10 is arranged along the horizontal direction;

the rear end of the seat cushion assembly 200 is hinged to the sliding plate 8;

the sliding wheel 9 is rotatably connected to the sliding plate 8 and is slidably fitted in the sliding groove 10, so that the rear end of the seat cushion assembly 200 is slidably connected to the base 1 in the horizontal direction; in this embodiment, two sliding wheels 9 are provided on each sliding plate 8.

As shown in fig. 1 to 8, the seat cushion assembly 200 includes, for example, but not limited to, a mounting seat 11 and a seat cushion 12 connected to the mounting seat 11, wherein the mounting seat 11 includes a front cross bar 13, a rear cross bar 14, two mounting bars 15 and connecting plates 16 corresponding to the mounting bars 15 one by one; wherein the content of the first and second substances,

the connecting plates 16 are connected to the rear end parts of the corresponding mounting rods 15;

one end of the rear cross bar 14 is connected to one of the connecting plates 16, and the other end of the rear cross bar 14 is connected to the other connecting plate 16;

one end part of the front cross bar 13 is connected with the front end part of one of the mounting rods 15, and the other end part of the front cross bar 13 is connected with the front end part of the other mounting rod 15;

the two rocker arm driving rods 2 and the two sliding mechanisms are arranged, the two rocker arm driving rods 2 and the two sliding mechanisms are respectively in one-to-one correspondence with the mounting rods 15, one end portion of each rocker arm driving rod 2 is hinged to the corresponding mounting rod 15, and the rear end portion of each mounting rod 15 is hinged to the corresponding sliding plate 8 in the corresponding sliding mechanism. In the present embodiment, the backrest support driving means and the leg support means 400 are both connected to the mounting seat 11 in the seat cushion assembly 200; specifically, the base 1 is further provided with supporting blocks 56 corresponding to the mounting rods 15 one by one, and the supporting blocks 56 are used for supporting the front end portions of the corresponding mounting rods 15 when the seat cushion assembly 200 is located at the horizontal initial position; the pressure reducing device further comprises a buffer spring 57 in one-to-one correspondence with the rocker arm driving rod 2, an abutting part 60 is arranged on the rocker arm driving rod 2, one end part of the buffer spring 57 is used for abutting against the vehicle body 100, and the other end part of the buffer spring 57 is used for abutting against the abutting part 60 on the corresponding rocker arm driving rod 2 when the cushion assembly 200 moves to the horizontal initial position, so that a buffering effect is achieved.

As shown in fig. 1, 2, 3, 7, and 8, the backrest support driving means includes, for example and without limitation, the following structure:

a mounting bracket 17 for mounting the backrest 300, one end of the mounting bracket 17 being rotatably connected to the cushion assembly 200;

a backrest linear driving member 18, an upper end of the backrest linear driving member 18 is hinged on the mounting bracket 17, a lower end of the backrest linear driving member 18 is detachably hinged on the cushion assembly 200, so that when a lower end of the backrest 300 linear driving member is hinged on the cushion assembly 200, the backrest linear driving member 18 acts to drive the mounting bracket 17 to rotate on the cushion assembly 200, and further drives the backrest 300 to rotate relative to the cushion assembly 200; when the lower end of the back linear driving member 18 is disengaged from the seat cushion assembly 200, the mounting bracket 17 is adapted to rotate to be folded on the seat cushion assembly 200. Specifically, the mounting frame 17 is folded on the cushion assembly 200, so that the multifunctional electric wheelchair is convenient to carry and store, and the space is saved; in this embodiment, the mounting bracket 17 is rotatably connected to the two connecting plates 16, and the lower end of the backrest linear driving part 18 is detachably hinged to the rear cross bar 14.

As shown in fig. 1, 2, 3, 7, 8, 9 and 10, the lower end of the backrest linear driving member 18 may be hinged to the seat cushion assembly 200 by a quick release mechanism, such as but not limited to the following structure, which includes:

a connecting pin 19 connected to a lower end portion of the back linear driving part 18;

the quick release seat 20 is connected to the seat cushion assembly 200, and the quick release seat 20 is provided with a connecting groove 21 for being clamped into the connecting pin 19;

the buckle 23 is provided with a hook part 22, the buckle 23 is rotatably connected to the quick release seat 20 and has a clamping position and a disengagement position in the rotating process, when the buckle 23 is located at the clamping position, the hook part 22 clamps the connecting pin 19 in the connecting groove 21 so that the connecting pin 19 cannot be disengaged from the notch of the connecting groove 21; when the catch 23 is located at the disengagement position, the catch portion 22 disengages from the connecting pin 19 in the connecting groove 21, and the connecting pin 19 can be disengaged from the connecting groove 21;

and the torsion spring 24 is connected between the quick release seat 20 and the buckle 23, one end part of the torsion spring 24 is abutted against the buckle 23, and the other end part of the torsion spring 24 is abutted against the quick release seat 20, so that the buckle 23 is kept at a clamping position under the action of the elasticity of the torsion spring 24. Specifically, the buckle 23 is further provided with a pressing portion 58 which is pressed to rotate the buckle 23 to a disengaged position, the middle portion of the buckle 23 is rotatably connected to the quick release seat 20, the hook portion 22 is provided at one end portion of the buckle 23, the pressing portion 58 is provided at the other end portion of the buckle 23, and one end portion of the torsion spring 24 abuts against the pressing portion 58. Specifically, the quick release seat 20 is connected to the rear cross bar 14 in the seat cushion assembly 200, and the backrest linear driving member 18 may be an electric push rod or an air cylinder, in this embodiment, the backrest linear driving member 18 is an electric push rod.

As shown in fig. 1, 2, 3, 11 and 12, the multi-function electric wheelchair further includes a headrest device connected to the backrest support driving means, such as but not limited to the following structure, which includes:

a headrest 25;

a first adjusting rod 26, wherein a first bulb 27 is arranged on the first adjusting rod 26;

a second adjusting rod 28, wherein a second bulb 29 is arranged on the second adjusting rod 28;

the sliding seat 30 is connected to the backrest support driving device;

a locking plate 31, a fixed end of the locking plate 31 is connected to the sliding seat 30, a locking gap 32 is arranged between a movable end of the locking plate 31 and the sliding seat 30, and a sliding hole 33 for slidably connecting the first adjusting rod 26 is formed between the locking plate 31 and the sliding seat 30;

a first locking bolt 34, wherein the first locking bolt 34 is connected between the movable end of the locking plate 31 and the sliding seat 30, and the first locking bolt 34 is used for pressing the movable end of the locking plate 31 towards the sliding seat 30, so that the locking plate 31 and the sliding seat 30 clamp the first adjusting rod 26, and the position of the first adjusting rod 26 is locked;

a left clamping block 35 and a right clamping block 36, a sliding channel 37 for slidably connecting the second adjusting rod 28 and a ball head cavity 38 adapted to the first ball head 27 are cooperatively formed between the left clamping block 35 and the right clamping block 36, and the first ball head 27 is cooperatively connected in the ball head cavity 38;

at least one second locking bolt 39, the second locking bolt 39 is connected between the left clamping block 35 and the right clamping block 36, the second locking bolt 39 is used for locking the left clamping block 35 on the right clamping block 36 when the second adjusting frame slides to a proper position in the sliding channel 37 and the first ball head 27 rotates to a proper position in the ball head cavity 38, so that the left clamping block 35 and the right clamping block 36 clamp the second adjusting frame and the first ball head 27, and further lock the position of the second adjusting rod 28 relative to the first adjusting rod 26;

a front plate 40, wherein the headrest 25 is connected to the front plate 40, and a front spherical surface portion 41 adapted to the front end portion of the second spherical head 29 is arranged on the front plate 40;

the rear clamping plate 42 is provided with a rear spherical part 43 matched with the rear end part of the second ball head 29, and the second ball head 29 is connected between the front spherical part 41 and the rear spherical part 43 in a matching manner;

and at least one third locking bolt 44, wherein the third locking bolt 44 is connected between the front plate 40 and the rear plate 42, and the third locking bolt 44 is used for locking and connecting the rear plate 42 to the front plate 40 when the headrest 25 rotates to a proper position relative to the second adjusting bracket, so that the front spherical part 41 and the rear spherical part 43 clamp the second ball head 29, and further, the position of the headrest 25 relative to the second adjusting rod 28 is locked. In this embodiment, the sliding seat 30 is fixedly connected to the mounting frame 17 in the backrest support driving device; specifically, the first locking bolt 34, the second locking bolt 39 and the third locking bolt 44 are loosened, then the height position of the first adjusting lever 26 relative to the mounting frame 17 is adjusted, the position and the angle of the second adjusting lever 28 relative to the first adjusting lever 26 are adjusted, and the angle of the headrest 25 relative to the second adjusting lever 28 is adjusted, so that the headrest 25 moves to an optimal position, and the use of the headrest by a patient is more comfortable.

As shown in fig. 1, 2 and 3, the leg supporting device 400 includes two leg supporting mechanisms, such as, but not limited to, a structure including a connecting frame 45, a supporting rod 46, a foot pedal 47, a leg rest 48 and a leg linear driving member 49; wherein the content of the first and second substances,

the connecting frame 45 is connected to the cushion assembly 200;

one end of the supporting rod 46 is hinged on the connecting frame 45;

the pedal 47 is connected to the other end of the support rod 46;

the leg rest 48 is connected to the middle part of the support rod 46 and is used for supporting the rear side of the lower leg;

one end of the leg linear driving member 49 is hinged to the connecting frame 45, and the other end of the leg linear driving member 49 is hinged to the supporting rod 46, so that the leg linear driving member 49 drives the supporting rod 46 to rotate to lift the leg of the patient. Specifically, the two leg support mechanisms are respectively used for supporting a left leg and a right leg; in this embodiment, the foot pedal 47 can be retracted upward, the connecting frame 45 is connected to the mounting seat 11 of the seat cushion assembly 200, and the leg linear driving member 49 can be an electric push rod or an air cylinder, preferably an electric push rod.

As shown in fig. 1, 2, 3, 13, 14, 15, the multifunctional electric wheelchair may further include left and right armrests, a controller 50, and a turning device 51; wherein the content of the first and second substances,

the left armrest and the right armrest are both connected to the cushion assembly 200, and specifically, the left armrest and the right armrest are both connected to the mounting seat 11 in the cushion assembly 200;

the controller 50 is connected to the left armrest or the right armrest through the corner device 51, and the corner mechanism is, for example and without limitation, a fixed seat 52, a left connecting rod 53, a right connecting rod 54, a left magnet, a right magnet, and a movable seat 55; wherein the content of the first and second substances,

the fixed seat 52 is connected to the left armrest or the right armrest;

one end of the left connecting rod 53 is hinged to the fixed seat 52, and the other end of the left connecting rod 53 is hinged to the movable seat 55;

one end of the right connecting rod 54 is hinged on the fixed seat 52, the other end of the right connecting rod 54 is hinged on the movable seat 55, the left connecting rod 53 is parallel to the right connecting rod 54, and the lengths of the left connecting rod 53 and the right connecting rod 54 are equal;

the controller 50 is connected to the movable seat 55, the movable seat 55 is movably connected to the fixed seat 52 through the swinging of the left connecting rod 53 and the right connecting rod 54, the movable seat 55 has a first position located in front of the patient and a second position away from the front of the patient during the moving process, and when the movable seat 55 moves to the first position or the second position, the right side part of the left connecting rod 53 is abutted to the left side part of the right connecting rod 54;

the left magnet is connected to the left connecting rod 53, and the right magnet is connected to the right connecting rod 54, so that the left magnet and the right magnet attract the left connecting rod 53 and the right connecting rod 54 together. Specifically, when sliding seat 55 and controller 50 are located when the first position, controller 50 is located the patient and makes things convenient for the patient to operate, when sliding seat 55 and controller 50 are located when the second position, controller 50 leaves the patient and makes things convenient for the patient to get in and out the wheelchair this moment, makes things convenient for the patient to have a dinner and read the data. In this embodiment, nylon gaskets 59 are respectively disposed between the left connecting rod 53 and the fixed seat 52, between the right connecting rod 54 and the fixed seat 52, between the left connecting rod 53 and the movable seat 55, and between the right connecting rod 54 and the movable seat 55, so as to reduce friction force during rotation; the controller 50 is in control connection with the decompression linear driving component 5, the backrest linear driving component 18 and the leg linear driving component 49, so that the decompression device, the backrest support driving device and the leg support device 400 are controlled to act through the controller 50; the controller 50 is further configured to control the vehicle body 100 to travel, and a specific structure of the controller 50 is the prior art, which is not described in detail in this embodiment; in this embodiment, the fixing base 52 is connected to the right armrest.

The working principle of the invention is as follows:

the pressure reducing device can drive the cushion assembly 200 to move to a pressure reducing position with a high front part and a low back part, and at the moment, the patient sits on the wheelchair on his back to reduce the pressure of the buttocks of the patient, so that the ache of the buttocks is relieved. The leg supporting device 400 can drive the legs of the patient to be lifted upwards, the backrest supporting and driving device can drive the backrest 300 to rotate relative to the seat cushion assembly 200 to a lying position, and at the moment, the patient can lie on the seat cushion assembly 200 and the backrest 300 horizontally. When cushion subassembly 200 is located the decompression position of high back low before, simultaneously when back 300 is located the position of lying, can make the patient be in the low high state of leg of head, can alleviate because of the fatigue that causes of sitting for a long time, through the switching of a plurality of gestures, make the patient needn't keep the position of sitting for a long time, and then can alleviate patient's muscle ache, improved the comfort level that the wheelchair used.

When the lower end portion of the back linear driving member 18 is separated from the seat cushion assembly 200, the mounting bracket 17 can be folded on the seat cushion assembly 200 to save space and facilitate carrying and storage.

Controller 50 passes through corner device 51 is connected on the right side handrail, controller 50 can pass through corner device 51 removes to the patient in front of to make things convenient for patient's operation, controller 50 can also pass through corner device 51 removes to leaving before the patient, makes things convenient for the patient to get in and out the wheelchair this moment, makes things convenient for the patient to have a dinner and reads the data.

By loosening the first, second and third locking

bolts

34, 39 and 44, and then adjusting the height position of the first adjustment bar 26 relative to the mounting bracket 17, the position and angle of the second adjustment bar 28 relative to the first adjustment bar 26, and the angle of the headrest 25 relative to the second adjustment bar 28, the headrest 25 is moved to an optimal position for the comfort of the patient.

The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. A multifunctional electric wheelchair is characterized by comprising a vehicle body (100), a cushion assembly (200), a pressure reducing device, a backrest (300), a backrest support driving device and a leg support device (400); wherein the content of the first and second substances,

the cushion assembly (200) is mounted on the pressure relief device and has a horizontal initial position;

the decompression device is arranged on the vehicle body (100) and is used for driving the cushion assembly (200) to move to a decompression position with high front and low back relative to the vehicle body (100) in an action manner;

the backrest (300) is mounted on the backrest support drive;

the backrest support driving device is connected to the cushion assembly (200) and is used for acting to drive the backrest (300) to rotate relative to the cushion assembly (200), so that the backrest (300) has a lying position enabling a patient to lie on the cushion assembly (200) and the backrest (300) and a leaning position enabling the patient to lean on the cushion assembly (200) and the backrest (300) in the rotating process;

the leg support device (400) is connected to the cushion assembly (200) and is used for supporting the legs of the patient, and the leg support device (400) is used for acting to lift the legs of the patient upwards.

2. Multifunctional electric wheelchair in accordance with claim 1, characterized in that the pressure relief device comprises a base (1), a drive mechanism and at least one rocker arm drive rod (2); wherein the content of the first and second substances,

the base (1) is arranged on the vehicle body (100);

the rear end part of the cushion component (200) is connected to the base (1) in a sliding manner along the horizontal direction;

one end of the rocker arm driving rod (2) is hinged to the cushion assembly (200), and the other end of the rocker arm driving rod (2) is hinged to the base (1);

the driving mechanism is installed on the base (1) and connected with the rocker driving rod (2), and the driving mechanism is used for acting to drive the rocker driving rod (2) to rotate relative to the base (1), so as to drive the rear end part of the cushion assembly (200) to slide on the base (1) and drive the front end part of the cushion assembly (200) to ascend or descend.

3. The multifunctional electric wheelchair as claimed in claim 2, characterized in that the drive mechanism comprises a drive shaft (3), a drive link (4), a decompression linear drive member (5), a drive rod (6) in one-to-one correspondence with the rocker arm drive lever (2), and a driven link (7) in one-to-one correspondence with the drive rod (6); wherein the content of the first and second substances,

the driving shaft (3) is rotationally connected to the base (1);

one end part of the driving connecting rod (4) is connected with the driving shaft (3);

one end of the decompression linear driving component (5) is hinged on the base (1), and the other end of the decompression linear driving component (5) is hinged on the other end of the driving connecting rod (4), so that the decompression linear driving component (5) drives the driving shaft (3) to rotate through the driving connecting rod (4);

one end of the driven connecting rod (7) is connected to the driving shaft (3), and the other end of the driven connecting rod (7) is hinged to one end of the corresponding driving rod (6);

the other end of the transmission rod (6) is hinged to the corresponding rocker arm driving rod (2), so that the driving shaft (3) drives the driven connecting rod (7) to rotate, and the rocker arm driving rod (2) is driven to rotate relative to the base (1) through the transmission rod (6).

4. The multifunctional electric wheelchair as claimed in claim 2, characterized in that the rear end of the cushion assembly (200) is slidably connected to the base (1) in a horizontal direction by at least one sliding mechanism comprising a sliding plate (8), at least two sliding wheels (9) and a sliding groove (10) provided on the base (1); wherein the content of the first and second substances,

the length direction of the sliding groove (10) is arranged along the horizontal direction;

the rear end of the cushion component (200) is hinged on the sliding plate (8);

the sliding wheel (9) is rotatably connected to the sliding plate (8) and is slidably arranged in the sliding groove (10).

5. The multifunctional electric wheelchair as claimed in claim 4, characterized in that the cushion assembly (200) comprises a mounting seat (11) and a cushion (12) connected to the mounting seat (11), the mounting seat (11) comprises a front cross bar (13), a rear cross bar (14), two mounting bars (15) and connecting plates (16) corresponding to the mounting bars (15) one by one; wherein the content of the first and second substances,

the connecting plate (16) is connected to the rear end part of the corresponding mounting rod (15);

one end part of the rear cross bar (14) is connected to one connecting plate (16), and the other end part of the rear cross bar (14) is connected to the other connecting plate (16);

one end part of the front cross bar (13) is connected with the front end part of one of the mounting rods (15), and the other end part of the front cross bar (13) is connected with the front end part of the other mounting rod (15);

the rocker arm driving rod (2) and the sliding mechanism are respectively provided with two, the rocker arm driving rod (2) and the sliding mechanism are respectively in one-to-one correspondence with the mounting rods (15), one end part of the rocker arm driving rod (2) is hinged to the corresponding mounting rod (15), and the rear end part of the mounting rod (15) is hinged to the sliding plate (8) in the corresponding sliding mechanism.

6. The multi-function electric wheelchair as claimed in claim 1, wherein the backrest support driving means comprises:

a mounting bracket (17) for mounting the backrest (300), one end of the mounting bracket (17) being rotatably connected to the cushion assembly (200);

a backrest linear driving component (18), wherein the upper end of the backrest linear driving component (18) is hinged on the mounting frame (17), the lower end of the backrest linear driving component (18) is detachably hinged on the cushion assembly (200), so that when the lower end of the backrest (300) linear driving component is hinged on the cushion assembly (200), the backrest linear driving component (18) acts to drive the mounting frame (17) to rotate on the cushion assembly (200); when the lower end part of the backrest linear driving part (18) is separated from the cushion assembly (200), the mounting frame (17) is used for rotating to be folded on the cushion assembly (200).

7. The multifunctional electric wheelchair as claimed in claim 6, wherein the lower end of the backrest linear drive part (18) is hinged to the seat cushion assembly (200) by a quick release mechanism comprising:

a connecting pin (19) connected to the lower end of the backrest linear driving member (18);

the quick-release seat (20) is connected to the cushion assembly (200), and a connecting groove (21) for clamping the connecting pin (19) is formed in the quick-release seat (20);

the buckle (23) is provided with a clamping hook part (22), the buckle (23) is rotatably connected to the quick release seat (20) and is provided with a clamping position and a disengaging position in the rotating process, and when the buckle (23) is located at the clamping position, the clamping hook part (22) clamps the connecting pin (19) in the connecting groove (21) so that the connecting pin (19) cannot be disengaged from the notch of the connecting groove (21) to form the connecting groove (21); when the catch (23) is in the disengaged position, the catch portion (22) disengages from the connecting pin (19) in the connecting slot (21);

the quick-release seat is characterized by comprising a torsion spring (24) connected between the quick-release seat (20) and the buckle (23), one end of the torsion spring (24) is abutted against the buckle (23), the other end of the torsion spring (24) is abutted against the quick-release seat (20), and the buckle (23) is kept at a clamping position under the action of the elasticity of the torsion spring (24).

8. The multi-function electric wheelchair as claimed in claim 1, further comprising a headrest device connected to the backrest support driving means, the headrest device comprising:

a headrest (25);

the first adjusting rod (26), a first bulb (27) is arranged on the first adjusting rod (26);

a second adjusting rod (28), wherein a second ball head (29) is arranged on the second adjusting rod (28);

a sliding seat (30), wherein the sliding seat (30) is connected to the backrest support driving device;

the locking device comprises a locking plate (31), wherein the fixed end part of the locking plate (31) is connected to a sliding seat (30), a locking gap (32) is arranged between the movable end part of the locking plate (31) and the sliding seat (30), and a sliding hole (33) for slidably connecting a first adjusting rod (26) is formed between the locking plate (31) and the sliding seat (30);

a first locking bolt (34), wherein the first locking bolt (34) is connected between the movable end part of the locking plate (31) and the sliding seat (30), and the first locking bolt (34) is used for pressing the movable end part of the locking plate (31) to the sliding seat (30) so that the locking plate (31) and the sliding seat (30) clamp the first adjusting rod (26);

a sliding channel (37) for slidably connecting the second adjusting rod (28) and a ball head cavity (38) matched with the first ball head (27) are formed between the left clamping block (35) and the right clamping block (36), and the first ball head (27) is connected in the ball head cavity (38) in a matching manner;

at least one second locking bolt (39), the second locking bolt (39) is connected between the left clamping block (35) and the right clamping block (36), the second locking bolt (39) is used for locking and connecting the left clamping block (35) to the right clamping block (36) when the second adjusting frame slides to a proper position in the sliding matching channel (37) and the first ball head (27) rotates to a proper position in the ball head cavity (38), so that the left clamping block (35) and the right clamping block (36) clamp the second adjusting frame and the first ball head (27);

the headrest (25) is connected to the front clamping plate (40), and a front spherical surface part (41) matched with the front end part of the second ball head (29) is arranged on the front clamping plate (40);

the rear clamping plate (42) is provided with a rear spherical part (43) matched with the rear end part of the second ball head (29), and the second ball head (29) is connected between the front spherical part (41) and the rear spherical part (43) in a matched manner;

at least one third locking bolt (44), the third locking bolt (44) is connected between the front clamping plate (40) and the rear clamping plate (42), and the third locking bolt (44) is used for locking and connecting the rear clamping plate (42) on the front clamping plate (40) when the headrest (25) rotates to a proper position relative to the second adjusting bracket, so that the front spherical surface part (41) and the rear spherical surface part (43) clamp the second ball head (29).

9. The multifunctional electric wheelchair as claimed in claim 1, wherein the leg supporting means (400) comprises two leg supporting mechanisms including a connecting frame (45), a support bar (46), a foot pedal (47), a leg rest (48) and a leg linear driving part (49); wherein the content of the first and second substances,

the connecting frame (45) is connected to the cushion assembly (200);

one end part of the supporting rod (46) is hinged on the connecting frame (45);

the pedal (47) is connected to the other end of the support rod (46);

the leg rest (48) is connected to the middle part of the supporting rod (46) and is used for supporting the rear side of the lower leg;

one end of the leg linear driving part (49) is hinged on the connecting frame (45), and the other end of the leg linear driving part (49) is hinged on the supporting rod (46), so that the leg linear driving part (49) drives the supporting rod (46) to rotate to lift the leg of the patient.

10. The multi-functional electric wheelchair as claimed in claim 1, further comprising left and right armrests, a controller (50) and a turning device (51); wherein the content of the first and second substances,

the left armrest and the right armrest are both connected to the cushion component (200);

the controller (50) is connected to the left armrest or the right armrest through the corner device (51), and the corner mechanism comprises a fixed seat (52), a left connecting rod (53), a right connecting rod (54), a left magnet, a right magnet and a movable seat (55); wherein the content of the first and second substances,

the fixed seat (52) is connected to the left handrail or the right handrail;

one end of the left connecting rod (53) is hinged to the fixed seat (52), and the other end of the left connecting rod (53) is hinged to the movable seat (55);

one end of the right connecting rod (54) is hinged on the fixed seat (52), the other end of the right connecting rod (54) is hinged on the movable seat (55), the left connecting rod (53) is parallel to the right connecting rod (54), and the lengths of the left connecting rod (53) and the right connecting rod (54) are equal;

the controller (50) is connected to the movable seat (55), the movable seat (55) is movably connected to the fixed seat (52) through the swinging of the left connecting rod (53) and the right connecting rod (54), the movable seat (55) has a first position located in front of the patient and a second position away from the front of the patient in the moving process, and when the movable seat (55) moves to the first position or the second position, the right side of the left connecting rod (53) is abutted to the left side of the right connecting rod (54);

the left magnet is connected to the left connecting rod (53), and the right magnet is connected to the right connecting rod (54), so that the left magnet and the right magnet attract the left connecting rod (53) and the right connecting rod (54) together.